Question

A 55-kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 41.6 degrees above the horizontal.

Part a:

If the tension in the rope is 165 N how much work is done on the crate by the rope to move it 3.0 m ?

___ J

Answer 1

Part a: Let the work done on the crate by the rope to move it 3.0 m is W.

Given that the tension on the rope is T=165 N.

The angle made by the rope with the horizontal is =41.6^o.

The distance d=3.0 m.

Now the work is done by the rope on the crate

  

The work is done on the crate by the rope to move it 3.0 m is 370.1600548 J or 370.16 J approx.